As we were growing up, my dad often referred to using RTV. Look it up and you will see that it stands for "Room Temperature Vulcanizing" rubber. It's a sticky product that is squirted out of a tube, then cures to a rubbery consistency. Amazing how many things my dad felt could be fixed by applying some RTV (fixing holes in sneakers using "Shoe-Goo" was just one use my dad had for RTV).
Well, it has been years since I even thought about RTV. Then all of a sudden I have a need for it. I like my simple bluetooth earpiece (Motorola H3). It came with the older phone I bought and since replaced. Nothing is wrong with the bluetooth electronics, but a molder rubber piece has torn over the years and is starting to fall off. I set it on the shelf for a long time because using it was a little ear-ritating!
And all of a sudden it hit me...I need RTV !! A judicious squirt here and there and I can stick that piece back on. Another squirt or two and some forming with a popsicle stick will make that piece good as new. It may not actually look like it came from the factory but it will work perfectly. And all for a little over a dollar.
Good old RTV !